Luminescence shift of electrospun ZnO/MEH-PPV/PEO composite nanofibers

Mi Yeon Cho, Kyoungah Cho, Sangsig Kim

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)

    Abstract

    The photoluminescence characteristics of electrospun ZnO/poly[2-methoxy-5- (2-ethylhexyloxy)-1,4-phenylenevinylene]/poly(ethylene oxide) (ZnO/MEH-PPV/PEO) composite nanofibers with various composite ratios of ZnO nanoparticles (NPs) and MEH-PPV are investigated in this study. The photoluminescence spectra of the nanofibers show sequential red- and blue-shifts in the peak wavelength with increasing concentration of ZnO NPs. For the nanofibers in which their concentration is relatively low, the dispersed ZnO NPs induce the aggregation of MEH-PPV, resulting in the red-shift of the peaks. In contrast, for the nanofibers with relatively high concentrations of ZnO NPs (over 50%), the blue-shift of the peaks occurs. The mechanisms of the red- and blue-shifts are discussed in this paper.

    Original languageEnglish
    Pages (from-to)79-82
    Number of pages4
    JournalJournal of Luminescence
    Volume134
    DOIs
    Publication statusPublished - 2013 Feb

    Keywords

    • Electrospun fibers
    • Luminescence
    • MEH-PPV
    • ZnO nanoparticle

    ASJC Scopus subject areas

    • Biophysics
    • Biochemistry
    • General Chemistry
    • Atomic and Molecular Physics, and Optics
    • Condensed Matter Physics

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